Zeners (1N5221B - 1N5279B)
1N5221B-1N5279B Rev. E2003 Fairchild Semiconductor Corporation
Absolute Maximum Ratings* T
A
= 25°C unless otherwise noted
Tolerance = 5%
Electrical Characteristics T
A
= 25°C unless otherwise noted
NOTES:
1) These ratings are based on a maximum junction temperature of 200 degrees C.
2) These are steady state limits. The factory should be consulted on applications involving pulsed
or low duty cycle operations.
*These ratings are limiting values above which the serviceability of the diode may be impaired.
**Non-recurrent square wave PW= 8.3 ms, TA= 50 degrees C.
Zeners
1N5221B - 1N5279B

Symbol

Parameter

Value

Units
P
D
Power Dissipation
Derate above 75°C
500
4.0
mW
mW/°C
T
STG
Storage Temperature Range -65 to +200 °C
T
J
Maximum Junction Operating Temperature + 200 °C
Lead Temperature (1/16” from case for 10
seconds)
+ 230 °C

DO-35 Glass case
COLOR BAND DENOTES CATHODE


Device

V
Z
(V)


Z
Z
(Ω)


I
Z
(mA)


Z
ZK
(Ω)


I
ZK
(mA)


I
R
(µA)


V
R
(V)


T
C
(%/°C)
1N5221B
1N5222B
1N5223B
1N5224B
1N5225B
2.4
2.5
2.7
2.8
3.0
30
30
30
30
29
20
20
20
20
20
1,200
1,250
1,300
1,400
1,600
0.25
0.25
0.25
0.25
0.25
100
100
75
75
50
1.0
1.0
1.0
1.0
1.0
- 0.085
- 0.085
- 0.080
- 0.080
- 0.075
1N5226B
1N5227B
1N5228B
1N5229B
1N5230B
3.3
3.6
3.9
4.3
4.7
28
24
23
22
19
20
20
20
20
20
1,600
1,700
1,900
2,000
1,900
0.25
0.25
0.25
0.25
0.25
25
15
10
5.0
2.0
1.0
1.0
1.0
1.0
1.0
- 0.07
- 0.065
- 0.06
+/- 0.055
+/- 0.03
1N5231B
1N5232B
1N5233B
1N5234B
1N5235BT
5.1
5.6
6.0
6.2
6.8
17
11
7.0
7.0
5.0
20
20
20
20
20
1,600
1,600
1,600
1,000
750
0.25
0.25
0.25
0.25
0.25
2.0
3.0
3.5
4.0
5.0
2.0
3.0
3.5
4.0
5.0
+/- 0.03
0.038
0.038
0.045
0.05
1N5236BT
1N5237BT
1N5238BT
1N5239BT
1N5240BT
7.5
8.2
8.7
9.1
10
6.0
8.0
8.0
10
17
20
20
20
20
20
500
500
600
600
600
0.25
0.25
0.25
0.25
0.25
6.0
6.5
6.5
7.0
8.0
6.0
6.5
6.5
7.0
8.0
0.058
0.062
0.065
0.068
0.075
1N5241BT
1N5242BT
1N5243BT
1N5244BT
1N5245BT
11
12
13
14
15
22
30
13
15
16
20
20
9.5
9.0
8.5
600
600
600
600
600
0.25
0.25
0.25
0.25
0.25
8.4
0.1
0.1
0.1
0.1
8.4
9.1
9.9
10
11
0.076
0.077
0.079
0.080
0.082

@
@
@